ABAP Keyword Documentation → ABAP Glossary
Input/Output Parameter
Formal parameter of a
procedure. When a call is made, the value of an
actual parameter is
passed to the input/output parameter. Its value can be set in the procedure to be available in the actual parameter at the end of the procedure. Input/output parameters are defined in
methods,
function modules, and
subroutines using CHANGING. Therefore, they are also called CHANGING parameters.